Networking

133. Axence NetTools 4.0 Pro
http://www.axencesoftware.com/index.php?action=NTPro
Windows
Take a gander at everything going on with your network with this suite of free diagnostics. You can monitor hosts, check stats on inbound and outbound traffic, get tables of local configuration info, scan for every node on your network (even rogues), and measure network bandwidth. And that's just for starters.

134. LogMeIn Hamachi2
https://secure.logmein.com/US/products/hamachi2/
Windows
Hamachi has always been a "zero-configuration" virtual private network (VPN) connection, and the free version can instantly connect up to 16 clients at once. You don't need special software. Hamachi creates a secure tunnel between the computers for fast, safe file transfers.

135. Meraki WiFi Stumbler
http://meraki.com/tools/stumbler/
Web
Is there a browser-based tool for trouble-shooting your wireless network that works? Meraki thinks so. Its WiFi Stumbler doesn't install any software; it just discovers the access points/routers on your network and gives you all the information you need to make it work better.
• Read PCMag's review of Meraki WiFi Stumbler.

136. NetSetMan 3.0.2
http://www.netsetman.com
Windows
Windows itself might getting better, but its networking setup seems to get ever more convoluted. NetSetMan is a one-stop interface for changing all your network settings, so you can easily switch from home, work, or travel settings, and even take better advantage of multiple network connection types.

137. Wireshark 1.2.6
http://www.wireshark.org
Windows | Mac | Portable
You don't know you need a protocol analyzer and packet sniffer for your network. But you do, if you want to squeeze the most out of it. Wireshark can tell you plenty; as much as some of its for-fee competition. Throw Wireshark on a USB flash drive and you can take it from network to network.